Brooklyn (named after the Dutch town Breukelen) is one of the five boroughs of New York City. An independent city until its consolidation into New York in 1898, Brooklyn is New York City's most populous borough, with more than 2.5 million residents. If the borough was still considered an independent city, it would be the 4th largest city in the United States (while the remaining boroughs of New York would remain #1). Brooklyn is coterminous with Kings County, which is the most populous county in New York State, and the second most densely populated county in the United States (after New York County, which is the borough of Manhattan).

Though a part of New York City, Brooklyn maintains a character of its own, characterized by cultural diversity, an independent art scene, distinct neighborhoods, and a unique architectural heritage.